From the (not-terribly-clear) photographs:
A) the frogs look quite young; I'm estimating at about 1-1.5" by comparing with the size of the feed containers. So they're very cramped but not reallyreallysquashed - until they double in size... o.O
B) there is very little habitat in there (not much viv in the terr, if you get my meaning) to crowd them in - the exo-terra background, a plant or two (fake?), two small plastic tubs of live feed, and a couple of approx. 5" x 3" bare patches of small stones
From those photos, I'm guessing that they are also not being supplemented and the feeders aren't gut-loaded. I can't see a submerge area, but there is a greyish blob that looks a lot like an Exo Terra water well..? At least the tank looks clean...
One thing I'm taking away from all this is that most pet shops need a swift smack upside the head.They're selling these tadpoles/frogs without providing any adequate care information at all! (For instance, when I was sold mealworms, I was never told they're too high in fat/low in nutrients to be a feed staple and that the exo-skeleton can cause complications. Nobody ever said anything about vitamins at all! Admittedly, that place specialises in avians, but they sell frogs too! They should inform potential owners of the responsibilities involved!) It's like the old goldfish-in-a-bag cliche... Make a sale, don't worry about it after it leaves the shop. Grrr...
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